前端配置了myAxios.defaults.withCredentials=true;//让ajax携带cookie 之后要是还是报错在后端的controller中加上注解： @CrossOrigin(origins = "http://localhost:5173",allowCredentials = "true")

解释

@CrossOrigin(origins = "http://localhost:5173",allowCredentials = "true")

• 前半部分是允许该地址进行跨域 origins = "http://localhost:5173"
• 后半部分是允许携带凭证 allowCredentials = "true"
• allowCredentials默认值是false